Grill cleaning appliance



FIG. 1 is a perspective view of a grill cleaning appliance showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a side elevational view thereof;

FIG. 5 is a front elevational view thereof; and,

FIG. 6 is a rear elevational view thereof.

The side not illustrated is a mirror image of the side illustrated in FIG. 4 and the broken line showings form no part of the claimed design. 

The ornamental design for a grill cleaning appliance, as shown and described. 